I think PS4 has been outselling XB1 by an even bigger margin in US this year.
According to Amazon just the Pro version alone has sold more than XB1S in 2017, which according to Sony makes up about 20% of the total PS4 sales. Son if just that 20% has sold more than all XB1S units in 2017 then that means PS4 has been outselling XB1S by ATLEAST 5:1 in 2017.
Is this a joke man lol. Cause I can play that game too. The pro as u say makes up 20% of PS4 sales. Project Scorpio edition is way ahead of it on the US AMAZON yearly charts. So by your own logic the Scorpio edition has done around double what the pro has sold in the US. Guess it had done around 2 million sales then right lol.
Halo MCC will sell 5+ million copies(including digital)
halo 5 will sell 10 million copies(including digital)
x1 will pass ps4 in USA, and UK.